X-Git-Url: https://git.ao2.it/libam7xxx.git/blobdiff_plain/c34b13939dd5f5d17cf63d00d11a9f134a1ff0a8..bbebd199987581ee6f344c89bfb02237dc0ab0bd:/HACKING.asciidoc diff --git a/HACKING.asciidoc b/HACKING.asciidoc index ed2a46b..61ca389 100644 --- a/HACKING.asciidoc +++ b/HACKING.asciidoc @@ -5,6 +5,35 @@ libam7xxx uses the linux kernel coding style: http://kernel.org/doc/Documentation/CodingStyle +=== Getting and compiling libam7xxx + +libam7xxx depends on 'libusb-1.0' and optionally on 'libav' or 'ffmpeg' for +its example programs, the build system used is 'cmake'. + +On a Debian based system, the dependencies can be installed with this command: + + $ sudo aptitude install cmake \ + libusb-1.0-0-dev \ + libavformat-dev \ + libavcodec-dev \ + libavdevice-dev \ + libswscale-dev \ + libxcb1-dev + +With libav/ffmpeg version previous than 0.9 this patch is needed: +http://git.ao2.it/libam7xxx.git/blob_plain/refs/heads/debian:/debian/patches/0001-Revert-am7xxx-play-switch-to-avcodec_encode_video2.patch + +The library and the example programs can be compiled following these steps: + + $ git clone git://git.ao2.it/libam7xxx.git + $ cd libam7xxx + $ mkdir build + $ cd build + $ cmake ../ + $ make + +After that the example programs can be found in the +bin/+ subdirectory. + === Debug builds The suggested way to hack on the project is: @@ -22,6 +51,13 @@ can run: $ cmake -D CMAKE_C_COMPILER=cgcc ../ $ make +And for a pre-release check with a different compiler, which never hurts: + + $ mkdir build + $ cd build + $ cmake -D CMAKE_C_COMPILER=clang -D CMAKE_BUILD_TYPE=debug -D STRICT_COMPILATION_CHECKS=ON ../ + $ make + === Cross Builds If you want to build for MS Windows: @@ -29,15 +65,17 @@ If you want to build for MS Windows: $ sudo aptitude install mingw-w64 $ mkdir build $ cd build - $ wget -nv http://sourceforge.net/projects/libusbx/files/releases/1.0.11/Windows/libusbx-1.0.11-win.7z - $ 7z -olibusbx-1.0.11-win x libusbx-1.0.11-win.7z + $ wget -nv https://github.com/libusb/libusb/releases/download/v1.0.21/libusb-1.0.21.7z + $ 7z -olibusb-1.0.21 x libusb-1.0.21.7z + $ wget -nv https://ffmpeg.zeranoe.com/builds/win32/dev/ffmpeg-3.4.2-win32-dev.zip + $ unzip ffmpeg-3.4.2-win32-dev.zip $ cmake \ -D GNU_HOST=i686-w64-mingw32 \ -D CMAKE_TOOLCHAIN_FILE=../cmake_modules/mingw_cross_toolchain.cmake \ -D CMAKE_INSTALL_PREFIX=libam7xxx-win/ \ - -D LIBUSB_1_INCLUDE_DIR=libusbx-1.0.11-win/include/libusbx-1.0 \ - -D LIBUSB_1_LIBRARY=libusbx-1.0.11-win/MinGW32/dll/libusb-1.0.dll \ - -D BUILD_AM7XXX-PLAY:BOOL=FALSE \ + -D LIBUSB_1_INCLUDE_DIR=libusb-1.0.21/include/libusb-1.0 \ + -D LIBUSB_1_LIBRARY=libusb-1.0.21/MinGW32/dll/libusb-1.0.dll \ + -D FFMPEG_ROOT=$(pwd)/ffmpeg-3.4.2-win32-dev \ ../ $ make @@ -51,3 +89,8 @@ dynamic analyzer by using a command like: $ valgrind --leak-check=full --show-reachable=yes --track-origins=yes \ ./bin/picoproj -W 800 -H 480 -f my_image.jpg + +or, for am7xxx-play: + + $ valgrind --leak-check=full --show-reachable=yes --track-origins=yes \ + ./bin/am7xxx-play -f x11grab -i :0